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Squares of 3 Digit Numbers Worksheet

Vedic maths trick 26: Squares of 3- and 4-digit numbers · Set 232 · 40 sums
TalentJR

The trick (Dwandwa Yoga): For abc: columns D(a) | D(ab) | D(abc) | D(bc) | D(c). D(a) = a², D(ab) = 2ab, D(abc) = 2ac + b², D(abcd) = 2ad + 2bc. Combine from the right with carries.

NameDateTime takenScore ___ / 40
  1. 1.120² =
  2. 2.1771² =
  3. 3.1286² =
  4. 4.626² =
  5. 5.2229² =
  6. 6.4479² =
  7. 7.927² =
  8. 8.217² =
  9. 9.3718² =
  10. 10.413² =
  11. 11.424² =
  12. 12.312² =
  13. 13.952² =
  14. 14.858² =
  15. 15.9177² =
  16. 16.1055² =
  17. 17.193² =
  18. 18.339² =
  19. 19.6951² =
  20. 20.117² =
  21. 21.854² =
  22. 22.640² =
  23. 23.225² =
  24. 24.634² =
  25. 25.647² =
  26. 26.7849² =
  27. 27.932² =
  28. 28.282² =
  29. 29.239² =
  30. 30.4881² =
  31. 31.311² =
  32. 32.7917² =
  33. 33.318² =
  34. 34.3349² =
  35. 35.966² =
  36. 36.1890² =
  37. 37.755² =
  38. 38.6798² =
  39. 39.167² =
  40. 40.6471² =

Answer key

  1. 14400
  2. 3136441
  3. 1653796
  4. 391876
  5. 4968441
  6. 20061441
  7. 859329
  8. 47089
  9. 13823524
  10. 170569
  11. 179776
  12. 97344
  13. 906304
  14. 736164
  15. 84217329
  16. 1113025
  17. 37249
  18. 114921
  19. 48316401
  20. 13689
  21. 729316
  22. 409600
  23. 50625
  24. 401956
  25. 418609
  26. 61606801
  27. 868624
  28. 79524
  29. 57121
  30. 23824161
  31. 96721
  32. 62678889
  33. 101124
  34. 11215801
  35. 933156
  36. 3572100
  37. 570025
  38. 46212804
  39. 27889
  40. 41873841

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